blood clot

As the plaques become unstable and rupture, blood clots form and can completely block the vessel or be carried by the bloodstream to other organs such as the brain.

In 2015, he went into a diabetic coma for four days, and the following year went to hospital with a blood clot.

The Oxford AstraZeneca vaccine is credited with saving millions of lives but it was also responsible, in rare cases, for serious side-effects - blood clots in the brain - which could be fatal.

Mary Klein, 55, who suffered a savage beating that left her with missing teeth and a blood clot in her brain, was attacked around 10:30 p.m.

There have also been extremely rare, but occasionally fatal,, external cases of people developing blood clots after taking the AstraZeneca vaccine.